Floor surfacing machine



May 14, 1935.. W,.El HOLT j A 2,001,098 l FLOOR' SURFACING MACHINE Filed May 19, 1933 2 Sheets-Sheet 1 ATTO R N EYS ay 14, 1935.. w. E. Hour FLOOR SURFAGING MACHINE 2 sheets-sheet? Filed May 19, 1933 ATTOR N EYS Patented May 14, 1935 UNITED STATES PATENT OFFICE 6 Claims.

The object of the invention is to provide a floor surfacing machine in which the refuse removed by the surfacing element is transferred to a removable receptacle through a conduit that functions also as a handle for moving the machine and also as an element for carrying the refuse receptacle; to provide a surfacing machine in which the housing for the surfacing element consists of a plurality of fastener connected elements, so that the cheap manufacture and assembly of this member is made possible; to provide a surfacer in which the surfacing element and refuse removing element are driven simultaneously by a single actuating member; and generally to provide a device of the kind indicated which is of simple form, composed of relatively few parts and is of a form of construction that reduces to a minimum the possibility of damage or disarrangement of any of the associated elements.

With this object in View, the invention consists in a construction and combination of parts of which a preferred embodiment is illustrated in the accompanying drawings but to which embodiment the invention is not to be restricted. Continued use in practice may dictate certain changes or alterations and the right is claimed to make any which fall within the scope of the annexed claims.

In the drawings:

Figure 1 is a side elevational view of a surfacing machine constructed in accordance with the invention.

Figure 2 is an enlarged vertical view, partly in section, of the housing and associated parts, one of the side Walls of the housing being removed.

Figure 3 is a top plan view with both the handle and driving motor removed, the position of the latter being indicated in dotted lines.

Figure 4 is a transverse vertical sectional View in the region of the axis of the fan.

Figure 5 is an elevational view of the sanding roller.

Figure 6 is a plan view of the dust nozzle and connected duct.

Figure 7 is a vertical sectional view of the upper end of the handle taken axially of the grips thereof.

The drum or roller I0 constitutes the dressing element of the invention and is formed with a groove ll extending across its face in which are received the extremities of the sanding sheet, so that as the drum is rotated, it may bear throught out its periphery on the floor to be dressed or surfaced and bring the latter to a smooth condition. The surfacing roller is rotatably mounted in a housing comprising a cap plate l2 and associated side plates It, the latter having lateral flanges I5 at their upper edges in which the bolts |16 are received after the latter are passed through the cap plate. The side plates are thus held in parallel 5 relation and theshaft ll on which the drum I0 is mounted, is journalled in opposite side plates, the

shaft extending laterally beyond one of the side plates, to receive a sheave it over which is trained a belt I9, likewise trained over the sheave 20 of 10 an actuating motor 2 Il, the motor being mounted on top of the casing and being bolted, as indicated at 22, to the cap plate.

Spacer bars 23 span the side plates at their lower edges and are connected with the side l5 plates by means of screws 23P- which pass through the latter and thread into the ends of the spacer bars.

Intermediately, the casing is supported on spaced rollers 2t, mounted on a shaft 25 spanning 20 the side plates, therollers 2d being disposed preferably below the motor 2 Il.

The motor in addition to driving the surfacing roll or drum l0, also drives a fan 26, housed in a casing 2l, bolted as at 20, to the main casing, the 25. shaft 29 of the fan being mounted on anti-friction bearings 30 and being provided terminally with a, sheave 3l over which is trained a belt 32 likewise trained over a sheave 33 on the motor shaft. 'I'he anti-friction bearings 30 are carried 30 in a tubular extension tt of the end case 35 closing the fan case on one side.

The fan is of the center-intake, peripheral-discharge form and at the axis of the shaft 29, the casing 2l is provided with an intake conductor 35 30 which is directed down toward the cap plate l2 and which terminates in a circumferentially contractile clamp 3l by which the nipple 38 extending through the cap plate is coupled to it. An elbow 30 terminally formed with similar 40 clamps 40 and 0l is coupled to this nipple and to a nipple 02, the latter being connected with ay dust nozzle 43 Whose neck portion is formed with a circumferentially contractile clamp 44 which effects the connection withthe nipple 42. The 45 dust suction nozzle 03 is of a Width substantially equal to the width of the surfacing drum or roller l0 and merges into the `neck portion, so that the draft of air passing through the nozzle as a result of the rotation of thel fan will carry with it the dust resulting from the operation of the drum.

The fan casing 2l has its discharge formed as a tangentially arranged socket 44 terminating in a circumferentially contractile clamp 45 in which 55v is received the lower end of a tubular conductor 46, the latter constituting the handle of the device, as well as a means for conducting the dust from the fan discharge into the receptacle 41, the latter being in communication with the conductor 46 at its upper end by reason of a return bend tubular conductor 48, coupled to the upper end of the conductor 46 and provided with a clamp 49 for removably effecting this connection. Suitable pipe fittings are interposed between the upper end of the conductor 46 and return bend 48 to provide for the application of hand grips 50 which extend laterally from the conductor 46 at the upper end on diametrically opposite sides.

The receptacle 41 is in the form of a bag tied to the extremity of the return bend 48, so that it will lie substantially parallel with the conductor 46 and in front of the latter.

The control switch 5I by which the motor 2| is controlled may be mounted at any acceptable point on the device as a whole, a satisfactory point of mounting being on top of the fan casing. It is therefore in convenient reach of the operator and may be turned on and off by him without difculty. When the switch is turned, the motor will obviously be put in operation, as will also the surfacing drum or roller and the fan. The device may then be moved over a floor surface by pushing on the hand grips 50, this operation tending to keep the surfacing roller close against the floor surface by reason of the supporting rolls then being converted into fulcrums through which the force applied by the operator is reapplied by the surfacing roll or drum to the floor surface. Pulling on the handles 50 may tend to rock the casing backward on the supporting rollers 24, and thus raise the surfacing roller, in which case abrading action would take place on the forward movement of the casing only.

The conductor 46 performs the double function of a handle for the device and a, means for transferring the discharge from the fan to the bag or receptacle 4l.

A shield 52 spans the side plates I4 in front of the surfacing drum I0, this shield being hinged, as indicated at 53, to the cap plate. It may thus be raised when desired to provide convenient access to the surfacing drum, but will normally hang by gravity in shielding relation to the latter.

The invention having been described, what is claimed as new and useful is:

1. A floor surfacing machine comprising a housing, a surfacing drum rotatably mounted within said housing, a dust suction nozzle positioned within said housing adjacent`said drum, a fan fixed to said housing and arranged to communicate with said nozzle, an electric motor mounted on the top of said housing and having driving connections to said drum and fan, a rearwardly inclined dust pipe connected to the discharge of said fan and having an inverted U-shaped section at its upper end extending forwardly thereof, grip members mounted on said dust pipe below said U-shaped section, and a dust bag communicating with the forward end of said U-shaped section and positioned at the front of said dust pipe, said dust bag being arranged throughout its extent in spaced relation to said electric motor.

2. A floor surfacing machine comprising a housing, a surfacing drum rotatably mounted within said housing, a dust suction nozzle positioned within said housing adjacent said drum, la fan fixed to said housing and arranged to communicate with said nozzle, an electric motor mollllld on the top of said housing and having driving connections to said drum and fan, a rearwardly inclined rigid dust pipe connected to the discharge of said fan and having grip members mounted thereon, an inverted U-shaped pipe having one end detachably connected to the upper end of said dust pipe above said grip members, and an elongated dust bag communicating with the other end of said U-shaped pipe and normally positioned forwardly of said dust pipe, said dust bag being arranged throughout its extent in spaced relation to said electric motor.

3. A floor surfacing machine comprising a housing, a surfacing drum rotatably mounted within said housing, a dust suction nozzle positioned within said housing adjacent said drum, a fan fixed to said housing and arranged to communicate with said nozzle, an electric motor mounted on the top of said housing and having driving connections to said drum and fan, a rearwardly inclined dust pipe connected to the discharge of said fan, a pipe fitting forming a continuation of the upper end of said dust pipe, grip members mounted on opposite sides of said fitting, an inverted U-shaped pipe having one end connected to the upper end of said fitting, and a dust bag communicating with the other end of said U-shaped pipe.

4. A floor surfacing machine comprising a housing, a surfacing drum rotatably mounted within said housing, a dust suction nozzle positioned within said housing adjacent said drum, a fan fixed to said housing and arranged to communicate with said nozzle, an electric motor mounted on the top of said housing and having driving connections to said drum and fan, a rearwardly inclined dust pipe rigidly connected to the discharge of said fan, a pipe fitting forming a continuation of the upper end of said dust pipe, grip members mounted on opposite sides of said fitting, an inverted U-shaped pipe having one end connected to the upper end of said fitting, and an elongated dust bag communicating with the other end of said U-shaped pipe and positioned forwardly of said dust pipe, said dust bag being arranged throughout its extent in spaced relation to said electric motor.

5. A floor surfacing machine comprising ahousing, a surfacing drum rotatably mounted within said housing, a dust suction nozzle positioned Within said housing adjacent said drum, a fan arranged to communicate with said nozzle, an electric motor mounted on the top of said housing and arranged to drive said drum and fan, a rearwardly inclined dust pipe connected to the discharge of said fan and having an inverted U- shaped section at its upper end extending forwardly thereof, grip means on said dust pipe adjacent its upper end, and a dust bag communicating with the forward end of said U-shaped section and normally positioned in front of said dust pipe, said dust bag being arranged throughout its extent in spaced relation to said electric motor.

6. A floor surfacing machine having a housing comprising a horizontally arranged top plate, a vertically arranged side plate detachably connected to said top plate at one side thereof, a second vertically arranged side plate detachably connected to the opposite side of said top plate, a bearing mounted in the forward portion of each of said side plates, a shaft rotatably mounted in said bearings and having one end projecting through said second side plate, a surfacing drum mounted on said shaft within said housing, said drum being proportioned to extend below the lowermost portion of seid iirst side piste. ,a dust suction mounted on said side plates within said housing nozzle positioned within seid housing sdjsoent st the resi' of said drum and extending below the said drum and carried by said top-plete. s tan lnwennost portion of said rst side plate, the mounted on' top of said top piste and munged iter surface of said first side plate being subl tocommunicate with said nonie,snelectric motor stsntialiy unobstructed by projecting parts and mounted on said top plate and having o driving arranged in the saine vertical plane throughout connection to the projecting end of seid drum its extent. shsigand a pair of supporting rollers rotatably WIILIAM E. HOL'I". 

